CN101635958A - Method and device for distributing channel mode resources - Google Patents
Method and device for distributing channel mode resources Download PDFInfo
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- CN101635958A CN101635958A CN200810133300A CN200810133300A CN101635958A CN 101635958 A CN101635958 A CN 101635958A CN 200810133300 A CN200810133300 A CN 200810133300A CN 200810133300 A CN200810133300 A CN 200810133300A CN 101635958 A CN101635958 A CN 101635958A
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Abstract
The embodiment of the invention discloses a method and a device for distributing channel mode resources. The method comprises the following steps: judging whether distributive channel codes exist; when the distributive channel codes exist, acquiring a lightest symbol loaded in the channel codes to carry out distribution; and when the distributive channel codes do not exist, applying for a new channel code. By using the embodiment of the invention, the same F-DPCH channel code can be shared by users as many as possible, and the users are distributed to the current loaded lightest symbol so as to furthest improve the utilization rate of the channel codes of a cell and balance the load of Uu interfaces.
Description
Technical field
The present invention relates to field of wireless communication, relate in particular to a kind of method and apparatus of distributing channel mode resources.
Background technology
In 3-G (Generation Three mobile communication system), Radio Resource is the most valuable resource, and utilization ratio of wireless resources directly has influence on the capacity and the performance of system.RRM (Radio Resource Management, RRM) guarantees the service quality (QoS) of system mainly by the distribution and the management of air interface resource, the balance of covering of assurance system and capacity.The main Radio Resource key element of WCDMA system comprises: frequency, code word, power etc.
In order to save the channel code resource and the power resource of sub-district, 3GPP (3rd Generation PartnershipProject, third generation collaborative project) introduced F-DPCH (Fractional Dedicated PhysicalChannel, fractional dedicated physical channel) at R6.F-DPCH is a kind of descending DPCCH (DedicatedPhysical Control Channel of simplification, Dedicated Physical Control Channel), get rid of pilot bits Pilot territory, only kept the TPC territory that is used to transmit the power control command that carries out downlink power control needs, its time slot position remains unchanged, and the implication of TPC Bit is also the same with descending DPCCH.As shown in Figure 1, the F-DPCH channel code can the more user of time division multiplexing (maximum 10), and the Symbol that each user only takies among each Slot carries TPC Command.It is 256 that agreement is specified the SF (Spreading Factor, spreading factor) of F-DPCH, the same with descending DPCH for the F-DPCH channel code, distributes on the idle code tree of SF256 by order from small to large.Ten F-DPCH users share SF256 channel code, need these ten users 256chip that staggers mutually in a Slot (time slot) lining, each biasing is numbered, and be exactly 0～9.How being a F-DPCH user distributes suitable channel code and Symbol resource, will have influence on the resource utilization and the cell capacity of sub-district.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention:
Existing F-DPCH channel code resource allocation algorithm is fairly simple, most typical allocation algorithm is the Random assignment method, for the user selects a F-DPCH channel code at random, the symbol of a free time of Random assignment then, though this method realizes simple, the utilance of F-DPCH channel code is lower.In addition, when setting up the F-DPCH channel for the soft handover user in the prior art, be the timing relationship that guarantees that soft switching link and former link are consistent, for this user distributes a F-DPCH channel code that exclusively enjoys, though this obviously method realizes simple, significant wastage F-DPCH channel code resource.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of distributing channel mode resources, make user as much as possible share same F-DPCH channel code, and the user is assigned on the lightest symbol of present load, farthest improve the channel code utilance of sub-district, the balanced load of Uu interface.
The embodiment of the invention provides a kind of method of distributing channel mode resources, comprising:
Judge whether to exist assignable channel code;
When having described assignable channel code, obtain that the lightest symbol of load distributes in the described channel code;
When not having described assignable channel code, apply for new channel code.
The embodiment of the invention provides a kind of device of distributing channel mode resources simultaneously, comprising:
Judge module is used to judge whether to exist assignable channel code;
Processing module is used for being the pre-user's distributing channel mode that inserts according to the judged result of described judge module, when having described assignable channel code, obtains that the lightest symbol of load distributes in the described channel code; When not having described assignable channel code, apply for new channel code.
Compared with prior art, the embodiment of the invention has the following advantages:
Provide method and apparatus by the embodiment of the invention, can whether have the distribution that specific time offset requires to carry out respectively the F-DPCH channel resource according to the user.User for no special time biasing requires earlier for it distributes the highest F-DPCH channel code of Symbol utilance, distributes the lightest Symbol of load for it again; For the user (Symbol is definite) who has special time biasing to require, for it distributes the highest channel code of Symbol utilance in the F-DPCH channel code of this Symbol free time.Can save sign indicating number resource and power resource to greatest extent for the user distributes suitable F-DPCH channel code and symbol number like this, balanced again simultaneously Uu mouth load.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the bias conditions schematic diagrames of ten users when sharing same channel code;
Fig. 2 is the method flow diagram of distributing channel mode resources in the embodiment of the invention;
Fig. 3 is the method flow diagram of distributing channel mode resources in further embodiment of this invention;
Fig. 4 is the scene schematic diagram of distributing channel mode resources in further embodiment of this invention;
Fig. 5 is the method flow diagram of distributing channel mode resources in the embodiment of the invention;
Fig. 6 is the apparatus module schematic diagram of distributing channel mode resources in the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of method and apparatus of user code resource allocation, on the basis that increases limited algorithm complex, has realized significantly improving of F-DPCH sign indicating number resource utilization, has also taken into account load balancing simultaneously.
The method of the user code resource allocation that the embodiment of the invention is provided below in conjunction with the drawings and specific embodiments is elaborated.
The method flow diagram of the user code resource allocation that Fig. 2 provides for the embodiment of the invention comprises:
Step s201, judge whether to exist assignable channel code.If there is execution in step s202; Otherwise execution in step s203.
Step s202, when having described assignable channel code, obtain that the lightest symbol of load distributes in the described channel code.Concrete, a channel code can be shared by ten users simultaneously, and Symbol of each CU when channel code has idle Symbol, can insert the user at this channel.For the access user who does not have the time offset requirement, can select the highest channel code of Symbol utilance, improve the utilance of channel code with this.Behind the selective channel sign indicating number, insert arbitrary Symbol that the user can take this channel code,, insert the user and can take the minimum Symbol of load based on the consideration that alleviates the Symbol load.The minimum Symbol of so-called load is meant that the user who takies this Symbol in the sub-district is minimum.
Step s203, when not having described assignable channel code, apply for new channel code.
By above-mentioned steps,,, improved the utilance of channel code resource and also taken into account load balancing simultaneously for it distributes the lightest channel code of Symbol utilance the highest while Symbol load for the access user who does not have the time offset requirement.For access user, can for meeting Symbol, its distribution require the highest channel code of Symbol utilance simultaneously according to the time offset requirement with time offset requirement.For access user, can be its distributing channel mode by similar method with other requirements.
Be elaborated below by the method for specific embodiment to user code resource allocation provided by the invention, as shown in Figure 3, for the F-DPCH user of new access, the distribution method of channel code and symbol is as follows, specifically comprises:
Step s301, base station controller judge whether the sub-district that the user inserts exists the F-DPCH channel code of having distributed.If there is execution in step s302; Otherwise, execution in step s303.
In the F-DPCH channel code that step s302, judgement have distributed, whether there is the channel code of symbol free time.If exist, select the highest F-DPCH channel code of any symbol occupancy, execution in step s304; If there is no, execution in step s303 then.Concrete, a channel code can be shared by 10 users simultaneously, and these 10 users 256chip that need stagger mutually in a Slot is numbered each biasing, 10 symbol totally.The F-DPCH channel code that the symbol occupancy is the highest just inserts the maximum F-DPCH channel code of user.
Step s303, F-DPCH user be to the new F-DPCH channel code of cell base station controller application, and select arbitrary symbol to distribute to the F-DPCH user of new access in this new channel code.
Step s304, obtain the lightest symbol of load in this channel code, and distribute to new access user.Concrete, the cell base station controller obtains the shared symbol of all F-DPCH users in the sub-district, obtains the minimum Symbol of user load in the above-mentioned F-DPCH channel code, this symbol is distributed to the F-DPCH user of new access.
As shown in Figure 4, above-mentioned steps is elaborated, (SF 256 to suppose sub-district that F-DPCH user's desire inserts to have three F-DPCH channel code, x, SF 256, y, SF 256, z), the user does not have special time biasing requirement, according to above-mentioned steps, at first select SF256, x is user's a F-DPCH channel code, because the user of its current shared maximum (6), promptly the symbol occupancy is the highest; Because 1,6,8, No. 9 symbol of F-DPCH channel code be the free time, and the load of No. 9 symbol the lightest (0), so No. 9 symbol are distributed to the F-DPCH user of new access.
By the description of the foregoing description, when inserting F-DPCH user, judge the symbol occupancy of F-DPCH channel code and the load capacity of each symbol earlier, F-DPCH user is inserted the highest and the lightest F-DPCH channel code of load capacity symbol of symbol occupancy.So not only improved the utilance of F-DPCH channel code, but also the balanced load of Uu mouth the capacity of system and the stability of system have been improved to a certain extent.
As shown in Figure 5, the method for the distributing channel mode resources that further embodiment of this invention provides, for the F-DPCH user of the new link connection of soft handover, the distribution method of code word and symbol is as follows:
Step s501, obtain the time offset of the former link of user, determine user's symbol according to this time offset.Concrete, because the user has qualification to time offset, so this user can only be linked in the F-DPCH channel code that satisfies its time qualification.
Step s502, judge whether the sub-district that the user inserts exists the F-DPCH channel code of having distributed.If there is execution in step s503; Otherwise, execution in step s504.
Step s503, judge the F-DPCH channel code that whether has this symbol free time in the F-DPCH channel code of having distributed in the sub-district.If there is execution in step s505; Otherwise execution in step s504.
Step s504, the new F-DPCH channel code of application, and the symbol that satisfies time offset in this channel code distributed to the user.
Step s505, in satisfying the F-DPCH channel code of time offset condition, the F-DPCH channel code that the symbol occupancy is the highest is distributed to the user.Concrete, obtain the load number of the symbol carrying of satisfying user-defined time offset, the F-DPCH channel code that the symbol occupancy is the highest is distributed to the user.
Whether the foregoing description has the distribution that specific time offset requires to carry out respectively the F-DPCH channel resource according to the user.User for no special time biasing requires earlier for it distributes the highest F-DPCH channel code of Symbol utilance, distributes the lightest Symbol of load for it again; For the user (Symbol is definite) who has special time biasing to require, for it distributes the highest F-DPCH channel code of Symbol utilance in the F-DPCH channel code of this Symbol free time.Can save sign indicating number resource and power resource to greatest extent for the user distributes suitable F-DPCH channel code and symbol number like this, balanced again simultaneously Uu mouth load.
Simultaneously, be the method that realizes that the embodiment of the invention provides, the embodiment of the invention also provides a kind of device of distributing channel mode resources, as shown in Figure 6, comprising:
Judge module 610 is used to judge whether to exist assignable channel code;
Processing module 620 is used for being the pre-user's distributing channel mode that inserts according to the judged result of described judge module, when having described assignable channel code, obtains that the lightest symbol of load distributes in the described channel code; When not having described assignable channel code, apply for new channel code.
This device also comprises: user type detection module 630 is used to detect pre-access user's type.
This processing module 620 comprises:
First processing sub 621 is used for judging when described judge module having described assignable channel code, and when to detect the pre-user of access be new access user, obtains that the lightest symbol of load distributes in the described channel code;
Second processing sub 622 is used for judging when described judge module and does not apply for new channel code when not having described assignable channel code and detecting the pre-user of access for the new user of access.
This processing module 620 also comprises:
The 3rd processing sub 623 is used for judging when described judge module having described assignable channel code, and when detecting the pre-user of access and being the new link connection user of soft handover, the channel code that comprises the idle Symbol that satisfies the time offset requirement is distributed;
Manages submodule 624 everywhere, be used for not having described assignable channel code when described judge module judgement, and when detecting the pre-user of access and be the new link connection user of soft handover, apply for new channel code, obtain and satisfy the idle Symbol that time offset requires in the described new channel code and distribute.
Provide method and apparatus by the embodiment of the invention, not only significantly improved the code word utilance by above-mentioned steps, also balanced Uu mouth load has improved the power system capacity and the stability of a system to a certain extent.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by hardware, also can realize by the mode that software adds necessary general hardware platform.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions with so that computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.
Claims (9)
1, a kind of method of distributing channel mode resources is characterized in that, comprising:
Judge whether to exist assignable channel code;
When having described assignable channel code, obtain that the lightest symbol of load distributes in the described channel code;
When not having described assignable channel code, apply for new channel code.
2, the method for claim 1, it is characterized in that, when inserting the user is the new link connection user of soft handover, determines user's symbol type according to the time offset of the original link of described user, and determines that described assignable channel code comprises described type symbol.
3, method as claimed in claim 1 or 2 is characterized in that, when having many channel code, obtains the highest allocatable channel sign indicating number of symbol utilance.
4, the method for claim 1 is characterized in that, after the new channel code of described application, also comprises when to insert the user be new access user: the arbitrary symbol that obtains in the described new channel code distributes.
5, method as claimed in claim 2 is characterized in that, described definite described assignable channel code comprises described type symbol, comprising:
Judge whether to exist the assignable channel code that comprises described type symbol;
If exist, obtain that the lightest described type symbol of load distributes in the described channel code;
If there is not described assignable channel code, apply for new channel code, obtain that type symbol distributes described in the described new channel code.
6, a kind of device of distributing channel mode resources is characterized in that, comprising:
Judge module is used to judge whether to exist assignable channel code;
Processing module is used for being the pre-user's distributing channel mode that inserts according to the judged result of described judge module, when having described assignable channel code, obtains that the lightest symbol of load distributes in the described channel code; When not having described assignable channel code, apply for new channel code.
7, device as claimed in claim 6 is characterized in that, also comprises:
The user type detection module is used to detect pre-access user's type.
8, device as claimed in claim 6 is characterized in that, described processing module comprises:
First processing sub is used for judging when described judge module having described assignable channel code, and when to detect the pre-user of access be new access user, obtains that the lightest symbol of load distributes in the described channel code;
Second processing sub is used for judging when described judge module and does not apply for new channel code when not having described assignable channel code and detecting the pre-user of access for the new user of access.
9, device as claimed in claim 6 is characterized in that, described processing module also comprises:
The 3rd processing sub is used for judging when described judge module having described assignable channel code, and when detecting the pre-user of access and being the new link connection user of soft handover, the channel code that comprises the idle Symbol that satisfies the time offset requirement is distributed;
Manages submodule everywhere, be used for not having described assignable channel code when described judge module judgement, and when detecting the pre-user of access and be the new link connection user of soft handover, apply for new channel code, obtain and satisfy the idle Symbol that time offset requires in the described new channel code and distribute.
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| CN2008101333001A CN101635958B (en) | 2008-07-25 | 2008-07-25 | Method and device for distributing channel mode resources |
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| CN2008101333001A CN101635958B (en) | 2008-07-25 | 2008-07-25 | Method and device for distributing channel mode resources |
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| KR100429540B1 (en) * | 1998-08-26 | 2004-08-09 | 삼성전자주식회사 | Packet data communication apparatus and method of mobile communication system |
| CN1157886C (en) * | 2001-07-20 | 2004-07-14 | 华为技术有限公司 | Consultative code resource-distributing method in CDMA system |
| CN100411326C (en) * | 2003-04-26 | 2008-08-13 | 华为技术有限公司 | Method for dynamic sharing resource of channel codes between heterogeneous channels |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: Super fusion Digital Technology Co.,Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |